Bearing-bar for grates.



W. HSHER. BEARING BAR FOR SEMES.

APPLICATIUN FILED MN. 27. 19H,

2 SHEETS-SHEEI l.

W. FISHER.

BEARING BAR FOR GHATES.

APPLICATION FILED ma. 2r. 19u.

Patenue Feb.. 5, 1918.

2 SHEETS-SHEET 2.

WARREN FISHER, OF NEW ORLEANS, LOUISIANA.

BEARING-BAB. FOR GRATES.

mamas.

Specication of Letters Patent.

Patented Feb. 5, i913..

Application filed January 27, 1917. Serial No. 144,931.

To all whom z't may concern:

Be it known that I, WARREN FISHER, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in Bearing-Bars for Grates; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to improve-- ments in bearing bars for grates, and the subject matter of the present application includes a portion of my prior application, Serial No. 130,237, filed November 8, 1916, and entitled Improvements in grates; and in addition certain other features which will more fully herein appear.

It is one object of my present invention to provide an improved bearing or supporting bar which is mounted in the furnace structure and provided to receive the trun` nions of the grate or fire bars, permitting the latter to be freely turned therein when oscillated to shake down the grate.

A further object of the present invention resides in providing an improved bearing or supporting bar which will be simple in construction, and economical of manufac ture, and which will admit of readily receiving the trunnions of the fire bars, and as readily providing for their removal when occasion demands.

With these and other objects in view the invention consists in the novel detailsof construction and combinations of parts more fully hereinafter disclosed and particularly pointed out in the claims.

In the accompanying drawings forming a part of this application, and in which similar reference symbols indicate correspondn ing parts in the several views:

Figure 1 is a fragmentary horizontal sectional view of a grate constructed substan1 tially in accordance with my prior application above, and illustrating in top plan the improved bearing` or supporting bar.

Fig. 2 is an enlarged top plan view of the improved bearing or supporting bar constructed in accordance with my presentV invention, and illustrating several l'ire bars in fragmentary dotted plan, as held therein.

Fig. 3 is a side elevational view of the bearing bar.

Fig. i is an end elevational view thereof.

Fig. 5 is a cross sectional view taken ou the line 5-5 of Fig. 3.

F ig. 6 is a similar view taken on the line 6-6 in Fig. 3.

Fig. 7 is a transverse sectional view taken on the line 7-7 in Fig. 3.

Fig. 8 is an enlarged perspective view of one of the improved bearing blocks.

Fig. 9 is a side elevational view of one of the blocks; and

Fig. 10 is an end elevational view of the same.

Referring more particularly to the lrawings, and for the present to Fig. l, l designates generally a furnace structure which is preferably of refractory material, incased and bound together by the outer metal covering 2; this covering, however, not being essential, and forming no part of the present invention, as the same is not used in all cases.

The front of the furnace is indicated at 3, in which are the doors 4, leading to the grate, through which the fuel is introduced. At 7 is indicated a bar extending across the front of the furnace, and at 8 is shown my improved bearing or supporting bar, which divides the grate into two or more parts and is so situated as to receive and hold the ad jacent trunnions of two separate series of lfire-bars. The location of this bearing` or supporting bar will also be clear to those skilled in this art from an inspection of my prior application mentioned above.

he grate or fire-bars are indicated at 9 as being of any approved or conventional type; such for instance as the similarly numbered bars in my application aforesaid. These bars are provided with staggered teeth or lugs 10 and 11, and are formed solid or hollow: in the latter case. receiving air to aid in the combustion and assist. in the draft in the furnace. These grate bars 9 are preferably connected to be oscillated by means of rods 37 and 38, which are the same as those similarly numbered appearing in my other application.

Referring more particularly to Figs. 2 to l0, of the drawings, the improved bearing bar. and associated parts, are formed of a casting 8 having reduced ends 50 and 5l, carrying oppositely proiecting ribs 52 and 53, respectively, for fitting a suitable support in the furnace provided to receive the Y same and hold the bearing bar preferably in a central position therein substantially as indicated in Fig. 1. The casting 8 is formed with a web' 54, perforated as in` dicated at 55, and being pf reduced thickness as compared with the other parts of the bearing bar. Abovel the web 54 the bearing bar 8 is provided with a longitudinal series of recesses 56 having sockets 57 in their bases and communicating` at one side with bearings 58. These bearings 58 are adapted to receive the trnnnions of the grate bars, as indicated in Figs. 1 and 2, where they will be held to support the grate bars for oscillating movement.

As shown to the right in Fig. 3, the recesses56 receivev bearing blocks 60` which appear in' Figs. 8, 9, and 10, and which carry projections 61 for entering the sockets? in the 'bearing bar 8. AThese bearing blocks 60 are formed with curved wallsV 62 which complete the cylindrical vcontour with the bearings 58 and fit the trunnions of the fire-bars, Vall as will be clear from an inspection of the hight-hand side of Figs. 2 and 3.

Y The upper edges of the bearing bar 8 and the blocks are shaped with depressions 63and 64 for receiving the ashes, and affording a hold for the bed of the ire.

It will,'of course` be understood that the trunnions on the fire-bars are iirst inserted through the recesses 56 in the bearingrbar 8, and downwardly therethroughrand into the bearings 58 where they have a rotatable snug fit due allowance being made for expansion. Thereupon the bearing blocks 60 are introduced into the recesses 56. they being allowed to descend vertically therein, and when so received they will take up the position shown to the right in Fig. 9 with the projections 61 occupying the sockets 57 and the curved Vwalls 62 embracing the trunnions of the fire-bars. By withdrawing the blocks 60 the trunnions 22 of the fire-bars are readilv removed.

In oscillating the {ire-bars the shaking arms thereof act as counterweights. permitting the bars to be very easily moved to the vertical position, the. thrust in this instance being on the blocks 60 carried bv the bearing bar 8.V When. however. the fire-bars are oscillated back to the horizontal position. the lugs 10 and 11 will be moved through their cutting stroke, breaking up the clinkers and ashes and forcing the same into the ash pit :fand during this return movement the thrust transmitted through the journals 22 will be received not on the removable bearing blocks 60. but on the solid bearings 58 in the supporting bar 8.

Y -In the opposite walls of each'recess 56 are Vprovided slots 100 and 103. which are formed Y with`` beveled bottoms 110 andY 111,` which incline downwardly toward the' interior of the recessesseasto-deliver any ashes thereto that may have creptn Fthe slots 100 or On the bearing blocks 60 there are formed lugs 101 and 102, which, when the bearingblocks are iitted into the recesses 56, are received into the slots 100 and 108, thus guiding the blocks 60 into the recesses, and when in place, preventing the blocks `from being laterally displaced. The bottom edges of these lugs,v 101 and 102 are preferably formed straight4 so as to leave the. inclined bottoms 110 and 111 of the' slots free, and

not to interferey with the movement of theV ashes thereover.

Adjoining and communicating withithe recesses 56 are cut-away portions 104:, which are disposed opposite thebearings 58, "and beneathV whichrareV inclinedy surfaces [105. lV-hen inposition, as shown to the right in Figt, theleft .vertical walls ofthe. bearing blocks 60 extend slightly into the cut-away portionslOe and aboveV the inclined ysurfaces 105, wherebyV to receive any ashes descending from thelbeveled bottomsf110i of the'V slots- 100, which will pass to the'cnteaway' portions 104, and on-toy thesurfacesrl'O-iby `which they will be deflected out of and away from the bearing barrand into theash pit beneath. A j

The bearing blocks` as more particularly shown in Figs. 8 and 9. vare provided with substantially central and elongated openings 112, which afford a greater radiating surface with the .result of maintaining the blocks at a relatively lower temperature than when solid, and for thepurpose ofreducing the quantity of metal and the weight ofthe block. y Y f i Y The curved walls 62 of the bearing; block 60 are preferably suppliedA with flanges 106, which extend beyondthe bearing bar in a manner siinilarfto the flanges of thebearings 58, and afford an increased bearing surface for the trunnions ofthe iiresbarsl 9. fAny ashes that may Vfind theirwayv between the and will be worked-` out through the'sides of said bearings bythe Aaction of the'zfire-bar iio trunnions when oscillated in shaking down Y the grate'. J

The dimensions of the'bearing bar 8, as well as the dimensions of the Vother parts, may be varied `to suit specific requirements in each case, and it will be obvious that vari ousmodifications might be made Ain the herein described device and-'in the construction, combination and arrangement of parts which could be used without departing from the spirit of vmy invention.

Having thus described myinv'ention, what I claim andrdesire to Vsecure byLetters'Patent ofthe United VStates is:

l1. A supporting bar having a recess, a bearingv adjoiningsaid recess at one end, und f3 cut-away portion leading?from the Genies ot this patent may be beneath said cut-away portions, and slots formed with beveled bottoms, and bearing blocks fitting said recesses and extending some distance into said cut-away portions, said blocks having lugs received into said slots, substantially as described.

In testimony whereof, I affix my signature.

WARREN FISHER.

obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

